Instructions
118A5495A - AN405821998738en-000102 | 37
© Danfoss | Climate Solutions | 2023.02 | LCA012A024
When the evaporation temperature (setting value) is 5 – -19 °C, the low pressure cut value can be adjusted with the dip switches SW4-7, 4-8. (Although
13.3 bar is equivalent to evaporation pressure at -30°C, the compressor can be stopped without lowering to -30 °C by setting as shown in the table below.)
SW4-7 and SW4-8 at the shipment is "SW4-7" = "OFF", "SW4-8" = "ON".
Shows the low pressure setting OFF value converted from evaporation temperature.
Low pressure control setting pressure (LPSP)
Low pressure setting OFF value
LPSP
≥
18.7 bar
X bar
18.7 bar > LPSP
≥
13.3 bar
9.0 bar
13.3 bar > LPSP
6.0 bar
SW
4-7
SW
4-8
Low pressure setting OFF value "X"
29.45 bar > LPSP
LPSP ≥ 29.45 bar
OFF
OFF
13.3 bar
13.3 bar
ON
OFF
Pressure equivalent to “Evaporation temperature (setting value) -5 °C”
25.47 bar
OFF
ON
Pressure equivalent to “Evaporation temperature (setting value) -10 °C”
21.89 bar
ON
ON
Pressure equivalent to “Evaporation temperature (setting value) -15 °C”
18.68 bar
<Example setting value>
Purpose
Inside compartment
temp. range
Inside compartment
std.setting (Thermo
ON value)
Evaporation
temp.
(Setting value)
Pressure equivalent
to evaporation
temp.
Low pressure
setting OFF
value
Low pressure
setting ON
value
Error
pressure
Fruit,
vegetables
2~15°C
5~10°C
-10°C
25.5 bar
13.3 bar
30.5 bar
5.8 bar
Meat, fishes
-2~2°C
0°C
-17°C
20.6 bar
13.3 bar
25.6 bar
5.8 bar
Frozen foods
-20°C~-18°C
-18°C
-40°C
9.0 bar
6.0 bar
11.0 bar
5.8 bar
The low pressure setting (OFF value, ON value) and error pressure in the table above become as shown below depending on the evaporation temperature
(set by rotally switch).
Evaporation temperature
(setting value)
Converted pressure
(setting value)
Low pressure
setting OFF value
Low pressure
setting ON value
Error pressure
-5
~
-19
38.7 bar
~ 19.3 bar
13.3 bar
Evaporation temperature
Converted pressure (setting value)
+5.0 bar
5.8 bar
-20
~
-29
18.7 bar
~
13.8 bar
9.0 bar
Evaporation temperature
Converted pressure (setting value)
+3.0 bar
-30
~
-45
13.3 bar
~
7.3 bar
6.0 bar
Evaporation temperature
Converted pressure (setting value)
+2.0 bar
Following table shows examples of setting for reference.
SW
4-7
SW
4-8
ON OFF
Down
Up
Dip switch
<Examples of other setting>
Evaporation
temp. to set
SW1
(Tens place)
SW2
(Ones place)
5°C
7
5
-5°C
0
5
-10°C
1
0
-40°C
4
0
0
5
0
5
SW1
Insert tip of flat head
(precision) screwdriver
in this slot, and adjust
at a number.
Tens place
SW2
Ones place
Fig. 37
Fig. 38
Insert tip of flat head
(precision) screwdriver
in this slot, and adjust
at a number.